Reducing-mill.



H. E. BRUNNER & s.. COPE.

REDUCING MILL. APPLICATION FILED JULY 8. I913.

1,21 1,397. Patented Jan. 9, 1917.

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mr Mwms PETERS uo. PNON-LIIHO" WASHING mu. 0 cv H. E. BRUNNER & L. S. COPE. REDUCING MILL.

APPLICATION men JULY 8.1913.

Patented Jan. 9, 1917 2 SHEETSSHEET 2.

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' pression springs be acted on uniformlyrelatively to theadjustmentof the other end, '50

snares earns-r @FFECE V HAROLD EvERETT BRUNNER aNnLc-RENzo s. corner rnrLan LrHrA, rENEs'YL- VANIA, AssIenoRs'ro TEE HESS-BRIGHT nanuracroarne company, A ooRro- RATION OF DELAWARE.

To all whom it may concern 7 Be it known that we, HAROLD E. BRUNNER and Lorenzo S. Corn, citizens of the United States, residing at Philadelphia, in the county ofPhiladelphia and State of Penn-' sylvania, have invented certain new and usetype it is usual to mount'one of the rolls so' that it may be moved bodily to and from the other roll, and means are provided for adjusting the movable roll to and from its companion roll to control their action on the material. Further, compression springs are provided for holding the movable roll yieldingly in coacting relation to its com 'panion roll so that the event of the pas sage of a hard object between the rolls, the movable roll will yield to allow the object to pass. Further, means are provided for efiecting the quick release of the movable roll, that is its instant movement or separation from the fixed roll, these means being operated when for any purpose it is desired to prevent the rolls from acting on the material passing between them, for instance where the operator might observe that a hard object or foreign substance was about 'to pass between the rolls. In the operation of mills o1 this type it is important that in the automatic separation of the rolls, such as would be produced bythe passingof a hard object between'them, the several comwithoutlregard to the point in the length of the rolls where the object passes; and it is also important that the means for'adjusting the movable'roll to and from 'itslcompanion roll, be'of such construction and capable of such operation that an independent adjustment of one endof the'rroll may be efiected in order to set the rolls in the exact parale lelism. Further it is important that when Specifica tion o f Letters Patent.

REDUCING-MILL.

Patented Jan. e, 1917;

Application filed July 8, 1913. Serial No. 777,813. 7 I

the movable roll is adjusted, the adjusting action will not interfere with or disturb the tension of the compression springs.

his the aim of our invention to provide roll adjusting and controlling mechanism I which will meet these requirements, and our invention consists of mechanism for this purpose of improved form and construction operating to permit of the adjustment'of the movable roll, to maintain its parallelism with its companion roll, and to control the action o1 the rolls on the material, without varying the tension 7 of the compression springs, while at the same time in the automatic movement of the'movable roll, :in the event of the passage of a hard object be tween the rolls,- all of the compression springs are mounted to act on the movable member so as. to urge the vmovable roll toward its companion roll; vand further,

means are provided forpositively shifting the movable member transversely. in order to m ve the movable roll away from'itscompanion roll, in eilecti-ng its quick release. Manifestly the nvention may be embodied in other forms and'constructions, those rep resented in the accompanyingdrawmgs bemg merely by way of example. It wlll be understood therefore that our invention is not limited to any particular form .or rconstruction of the parts except in :sofar as such limitations are specified in the claims; In the accompanying drawings Figure 1' a is an elevation'partly in'section o f a' rolling mill having two'sets of reducing rolls andembodying our invention; Fig. Qiis'a side; view ofthe mill with one-half of the' figure j in elevation and the-other half in partial section; Fig. 3 is a horizontal transverse section on the line aa of Fig. 1; and Fig. 1 is a. vertical transverse section on the line Z)b of Fig. 1.

Referring to the drawings, in the form of mill shown the two sets or pairs of reducing rolls are the same on both sides of the ma chine, and inasmuch as our improved mechanism is likewise the same on both sides of the machine as applied respectively to said sets of rolls, a description of the mechanism as applied to one set of rolls will sufiice.

The machine embodies a rotary fixed roll 1 and a rotary movable roll 2, the two ends of the latter being mounted respectively in bearings 3, 3 fixed to slides l, 4; movable horizontally back and forth in fixed guideways 5, 5 sustained by the frame 6 of the machine at opposite sides of the same.

7, 7 represent two upright arms which are located respectively at opposite ends of the main frame of the machine adjacent respectively the movable roll bearings 3. The lower ends of these arms are firmly fixed to the opposite ends of a horizontal rock shaft 8, mounted in suit-able bearings in the main frame below the movable roll and extending parallel with the axis of the same, the fixed connection of the arms 7 with the shaft 8 causing said members to move in unison, and producing in effect a unitary member A movable to and from the roll 1. The movable roll bearin s 3 are so connected with the movable member A, that said roll bearings, and consequently the roll 2 carried by them, may be adjusted or moved relatively to said member to and from the companion roll 1. The means for effecting this connection may be in many different forms but we prefer to adopt the particular construction shown in the drawings wherein it will be seen, more particularly in Fig. 1, that the arms 7 are each provided with a circular vertical guideway 9 in which is loosely mounted, to slide up and down, a cylindrical slide or plunger 10 having fixed to its upper end a threaded extension or stem 11 encircled by a nut 12 rotatably sustained by the member 7 but held against endwise movement, and provided with a hand wheel 13 for turning it. At one side the circular guideway 9 is formed with a vertical slot 14 through which extends a horizontal pin 15 fixed to the slide-10, the said pins on opposite sides of the machine having pivoted to them-the outer ends of horizontal links 16 whose inner ends are pivoted as at 17 respectively to the two movable roll bearings The links 16. extend at a slight inclination upward from their point of pivotal connection with the roll bearings with the result that they will act with a toggle effect 7 when their outer ends are moved up. or

down, and will operate to shift the roll bearings back and, forth in their guides.

This movement of the links takes place when the hand wheels 13 are rotated, such rotation causing the threaded stems 11 to move endwise in the nuts and causing the cylindrical slides 10 to move up or down in the guideways according to the direction of the rotation of the nuts.

The parts described constitute in effect a roll adjusting mechanism sustained by the movable member A and operatively connected with the roll bearings, the operation of said mechanism moving the movable roll '2 relatively to the member 7. Inasmuch as the roll bearings are independent of each other, they may be independently adjusted by the adjusting mechanisms described, so as to control the positions of the movable roll relatively to the fixed roll and so as to effect and maintain the parallelism of said rolls. While the roll bearings may be ad usted independently relatively to the members A as described, yet when the member A is operated, it will cause the roll bearings to both move in unison and will shift the roll bodily without disturbing the relation of its axis to that of the other roll, this action being due to the fact that the two arms 7 are connected together by the shaft 8 which causes them to move in unison as before described.

The two arms 7 of the member A are acted on by compression springs 18, 18 in such manner that the member will be urged yieldingly toward the fixed roll, and through the medium of the adjustable connections between the arms 7 and movable roll bearings, the movable roll will be yieldingly urged toward the fixed roll. The manner of mounting the springs so that they will act as described is shown more particularlyinFigs. 1 and 4 where it will. be seen that the upper end of each arm 7 is formed with forked arms 19, 19 between which arms is pivoted a collar 20 by means of screws 21, 21 extending through the arms and seated in sockets in diametrically opposite sides of the collar. Within the collar loosely extends a sleeve 22 having a nut or stop 23 threaded on its inner end and engaging the inner side of the collar 20 'which sleeve is interiorly threaded at its outer end and screwed onto the threaded end of a rod 2% which extends inwardly through the sleeve and has its inner end movably connected with the main frame of the machine in the manner presently to be described. Near its outer end the'sleeve is provided with an annular stop or shoulder and the spring 18 encircles the sleeve 22 and bears at its outer end against the stop 25 and at its inner end against the collar 20 and in thismanner it acts to hold the collar up against thestop 23 with the result that the member A will be yieldingly held by the springs and will yieldingly hold the roll2 in coacting relation to'the roll 1, which, relation is determined "by horizontally adjustable set screws 7, d carried by the member A, in position to engage at their inner ends with the frame of the machine.

As a result of the construction described, 1t will be noted that'm the event of the accidental passage of a hard ob ect of abnormal size between the rolls, the roll 2 will be pushed back, and through the medium of the adjustable connection between the roll bearings 3 and the movable member A, the latter will beshifted back and both springs I 18 will be subjected to the same degree of compression. r

The rods 24 are so connected with the machine that theymay be moved endwise outwardly manually in effecting the quick release or instant separation of therolls. In the outward movement of the rods, thestops 23 on the inner ends of the sleeves 2:2 will, by engagement with the collar 20,-positively shift the arms 7 outwardly by which movement the movable roll 2 will be shifted away from its companion roll.- The outward movement of the rods may be effected in any suitable or appropriate manner butwe prefer to adopt a construction by which when the rods are in their normal position with the rolls in coasting relation, the rolls will be held automatically locked by the re action of the springs against the annular stop shoulders 25, but may be instantly operated manually to effect their release and to permit them to be moved endwise outwardly. To effect this object the rodsare curved at their inner ends inthe form of hooks pivoted at their extremities as at 26 to rocker arms 27' fixed to the opposite ends I of a shaft 28 to which is attached a hand lever 29 for operating it. The relation of the pivotal connection 26 of the rod with the rockerarm, to the connectionof said rocker arm with the shaft is such, that when the parts are in the position shown in Fig. 1, the said pivotal axes will be ,passed-center and any tendency of an outward pull on the rods 24% such as is exerted by the springs 18, will serve to hold the parts locked in the position shown so that it will require'a positive movement of the hand lever 29 to the left in order to shift the axes out of their locked relations after'which the continued movement of the lever will movethe rods 24 endwise outwardly and will thereby correspcndingly shift the movable members 7 with the result that the movable roll will be separated from its companion roll.

From the fcregoing description -1t will be noted that the adjustment of the movable roll is in relation to the movable member A and consequently such adjustment willnot affect the tension of the compression springs, nor will it disturb in any manner the'position of the member A. Furthermore it Will -med with relation to the other rolls.

beseen that when the movable rollis automatically separated from its companion roll, 7 l

as by the passage of a hard object of unduesize, the. movabl roll will maintain its parallelism with its companion roll, the

movable arms 7 will be thrownback equally and the compression sprmgs will beunifori'nly compressed. Further it will benoted' the parallelism of the rolls when the sup ports are moved, possesses many advantages,

one advantage being that in cases where the rolls are equipped wlth roller or ball bearings, their binding or misalinement will be prevented, which. objectionable action would take place unless means were provided for insuring the movements-of the bearing supports uniformly and in unison.

The inner rolls 1' of the two sets are fixed as far as anymovem'ent-to and from the other rolls is concerned, butsaid rolls 1 are adapted to be adjusted vertically-or tram This adjustment is effected by means of slides 30, 30 connected with the 'roll bearings and mounted to move up and down in "fiXetl' guides 31, 31 on th frame of the machine at opposite ends. Each of the slides is in the form of two sections 30 30 connected adjustably together near their upper ends by the fastening bolt 32, and at their'lower I ends the two sections are supported respec tively 'by' vertical adjusting screws 33, 33 V tapped in a horizontal bar Bstfixed to the frame, by which means the'slidesjmay befmoved vertically in their guide ways and one slide'section adjusted independently of the other. After the adjustments are made' the slides are firmly held in fixed position relatively to the frame by means of the bolts 32 before alluded to and horizontal bolts 846 34 "extending through "the slide sections 30, 80 and engaging the frame of the machine.

By the construction described the roll 1 may a 3 be trammed or adjusted vertically relatively to the other roll, and when the proper adjustment has been effected, the parts may be firmly secured in position.

Having thus described our invention what; g

we claim is:

: Ina mill, the combination of'two rollsf one of which is movable'to and from the in unison,'an adjustable connection directly other, movable bearings for themovable roll, I a freely movable controlling member for the movable roll, comprising two upright arms 7 connectedtogether in fixed relation'sto move between the arm and its. companion bearing, causing the arms to be moved in unison by the movable roll when the latter separates from its companion roll, and permitting of the adjustment of the movable roll relatively to the arms and the companion roll, and. springs sustained independently of the movable bearings, and acting on said arms respectively and operating through the medium of said arms, to hold the movable roll yieldingly in coactive relation to its companion roll. I

2. In a mill, the combination of a frame, two rolls mounted therein, one of which is movable to and from the other, movable bearings for the movable roll, sustained by the frame, a freely movable controlling member for the movable roll, sustained by the frame, adjustable connections between said controlling member and the respective movable bearings, causing said controlling member to be moved when the movable roll separates from its companion roll, and permitting of the adjustment of the movable roll relatively to the controlling member and to its companion roll, a spring sustained by the frame and acting on the controlling member and operating, through the medium of the controlling member, to hold the movable roll in coactive relation to its comp anion roll, and means for moving the controlling member in opposition to the spring to quickly separate the movable roll from its companion roll.

3. In a mill, the combination of a frame, two rolls mounted therein, one of which is movable to and from the other, movable bearings for the movable roll, a rock shaft mounted in hearings in the frame and eX- tending parallel with the axis of the rolls, two arms fixed at their ends to said shaft to move in unison, links pivoted at one of their ends to the roll-bearings respectively and movably connected at their opposite ends with the respective arms, adjusting means on the arms acting on the movable ends of the links, and springssustained independently of the movable bearings andacting on the arms to hold the movable roll yieldingly in coactive relation to its companion roll.

4. In a mill, the combination of two rolls, one of which is movable to and from the other, movable bearings for the movable roll, an upright horizontally movable controlling member for the movable roll, horizontal links pivoted at their inner ends to said bearings respectively, vertically movable slides mounted. in the controlling member and jointed to the rear ends ofthe links, and devices sustained by the controlling member and connected with the slides for adjusting the same vertically.

5. In a mill, the combination of two rolls, one of which is movable to and from the other, movable bearings for the movable roll, a horizontally movable controlling member for the movable roll, adjusting slides sustained by the controlling member and movable relatively thereto at an angle to the movement of the bearings, operative connections between the slides and bearings for moving the latter in one direction when the slides are moved in a different direction, and means sustained by the controlling member for adjusting the slides.

6. In a mill, the combination of a frame, two rolls, one of which is movable to and from the other, movable supports for the movable roll, a movable member pivotally mounted on the frame, means for controlling the movement of said member, guideways in said movable member, slides movable in said guideways, links pivotally connected with the roll supports respectively, and with said slides, adjusting screws connected with the slides, and rotary adjusting nutssustained by the movable member and engaging the screws. 7

In testimony whereof we have affixed our signatures in presence of two witnesses.

THEo. H, MCALLA, C. Bmnn.

Copies or this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

